git:20260824.0549249 to git:20260831.a99450d

# test

Vitest contracts for the codemode package plus the port-coverage parity ledger.

Earned by score 15 — contract layer and fixture hub (95 code files, ~12k LOC).

## WHERE TO LOOK

| Task | Path |

| --- | --- |

| Shared fakes, fixtures | `eval/fakes.ts` (`FakeKernel`, `FakeManager`), `eval-render-fixtures.ts` |

| Render contracts | `eval-render*.test.ts` family, `json-tree.test.ts`, `tool-widgets.test.ts` |

| Kernel contracts | `js-kernel*.test.ts`, `py-kernel*.test.ts`, `rb-kernel.test.ts`, `kernels/rb/`, `jl-kernel.test.ts` |

| Detach, interrupt, timeouts | `eval-detach*.test.ts`, `eval-tool-interrupt.test.ts`, `timeouts.test.ts`, `eval-hard-limit.test.ts` |

| Bridge protocol, servers | `bridge-protocol.test.ts`, `bridge-server*.test.ts`, `agent-bridge.test.ts`, `schema-bridge.test.ts` |

| Extension/session lifecycle | `extension.test.ts`, `session-manager*.test.ts`, `factory.test.ts` |

| Output sink | `output/` |

| Prompt snapshots | `prompt.test.ts`, `__snapshots__/` |

| Port coverage mapping | `PARITY.md` |

## CONVENTIONS

- Import `describe`/`it`/`expect`/`vi` explicitly; no ambient globals.

- Source imports are direct relative `.ts` paths; test-only fixtures live in

`test/eval/` and `eval-render-fixtures.ts`.

- Async behavior is asserted via promise resolution/rejection and fake timers

(`vi.useFakeTimers`, `advanceTimersByTime`); `setTimeout` appears only in

intentional crash/deadline fixtures; `vi.waitFor` stays event/state based.

- Titles are behavior-oriented, often Given/When; parity suites compare

JS/Python/Julia/runtime output and error behavior.

- `SIZE_OK` allowance marks the intentionally large parity suite.

## ANTI-PATTERNS

- Reserved schema/agent/output tools must never execute or surface as ordinary

agent tools; `tool_schema()` must not execute tools.

- Late bridge resumes must not revive detached/dead cells; no second interrupt

after hard-limit settlement; detached cells are never re-run or replayed as

synthetic user input.

- Legacy stored `title` without `summary` must not crash or emit a label line.

- Errors omit success previews; status histories and live previews stay bounded.

## COMMANDS

```bash

```